On 9/17/18 12:21 PM, Tim Shoppa wrote: > F11's and J11's were used not just on Unibus and Q-bus CPU's but are also found in DEC Pro's, HSC-50's, etc. So it's not > unusual to find pulled chips. > yup, ebay search for 57-19400 turns up 10+ sellers, incl new -09 rev I bought a few of those a while back.